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National Stock Number:
5310-99-766-5547
Federal Supply Class:
5310
National Item Identification Number:
997665547
Description:
WASHER,FLAT
Detail:
A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use SHIM. For items fabricated from ceramic or electrically rated materials by specification or industry standards use INSULATOR (1), WASHER. Excludes DISK, VALVE, graphite impregnated and lubricated items.
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Manufacturer Information:
| 10122498 | A486G | NIMIKKEISTOKESKUS NCB FINLAND | | 20-281-1060-11 | K5294 | GE AVIATION SYSTEMS LIMITED | | 9650-0402 | K1488 | BRITISH AEROSPACE PLC NAVAL AND ELECTRONIC SYSTEMS DIVISION | | 47171-043-00-4 | K4247 | THE CLARKE CHAPMAN GROUP LTD T/A WELLMAN BOOTH | | BS4320 | K7766 | BRITISH STANDARDS INSTITUTION | | BS4320CS4FORMAM4CP | U9115 | MINISTRY OF DEFENCE BRITISH STANDARD REFERENCES CONSTRUCTED TO A DEFINITI LEVEL FOR EUROFIGHTER AND TORNADO U NCB TASKING | | SM10500-064 | K0216 | THALES OPTRONICS LIMITED | | SM10500-089 | K0216 | THALES OPTRONICS LIMITED |
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Techincal Specification:
| CENTER HOLE SHAPE STYLE | ROUND | | CROSS-SECTIONAL SHAPE STYLE | RECTANGULAR | | HOLE DIAMETER | 4.30 MILLIMETERS MINIMUM AND 4.50 MILLIMETERS MAXIMUM | | MATERIAL DOCUMENT AND CLASSIFICATION | BS 1449, PART 3B, CS4 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL | | MATERIAL | STEEL OVERALL | | PERIPHERAL SHAPE STYLE | ROUND | | OVERALL DIAMETER | 8.70 MILLIMETERS MINIMUM AND 9.00 MILLIMETERS MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | BS 1706 CD3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL AND CHROMATE OVERALL | | THICKNESS | 0.70 MILLIMETERS MINIMUM AND 0.90 MILLIMETERS MAXIMUM |
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